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e0a or e0b exhibit intermittent link flapping in switchless 2-node cluster and recovers

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Applies to

  • ONTAP 9
  • AFF A300, FAS8200
  • AFF A200, FAS2650, FAS2620
  • AFF A220, AFF C190, FAS2750, FAS2720

Issue

  • Cluster ports e0a and e0b on a node experience link flaps or go down at the same time:

Thu Mar 16 12:40:47 -0300 [Node-02: intr: netif.linkDown:info]: Ethernet e0b: Link down, check cable.
Thu Mar 16 12:40:47 -0300 [Node-02: intr: netif.linkDown:info]: Ethernet e0a: Link down, check cable.

Thu Mar 16 12:40:50 -0300 [Node-02: vifmgr: vifmgr.portdown:notice]: A link down event was received on node Node-02, port e0b.
Thu Mar 16 12:40:50 -0300 [Node-02: vifmgr: vifmgr.clus.linkdown:EMERGENCY]: The cluster port e0b on node Node-02 has gone down unexpectedly.

Thu Mar 16 12:40:50 -0300 [Node-02: vifmgr: vifmgr.portdown:notice]: A link down event was received on node Node-02, port e0a.
Thu Mar 16 12:40:50 -0300 [Node-02: vifmgr: vifmgr.clus.linkdown:EMERGENCY]: The cluster port e0a on node Node-02 has gone down unexpectedly.

Thu Mar 16 12:41:40 -0300 [Node-02: intr: netif.linkUp:info]: Ethernet e0b: Link up.
Thu Mar 16 12:41:41 -0300 [Node-02: intr: netif.linkUp:info]: Ethernet e0a: Link up.

 

 

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